Results 41 to 50 of about 17,370 (252)

Controlled rotation mechanism of DNA strand exchange by the Hin serine recombinase. [PDF]

, 2016
DNA strand exchange by serine recombinases has been proposed to occur by a large-scale rotation of halves of the recombinase tetramer. Here we provide the first direct physical evidence for the subunit rotation mechanism for the Hin serine invertase ...
Johnson, Reid C, Lei, Xianbin, Marko, John F, McLean, Meghan M, Xiao, Botao   +4 more
core   +1 more source

An Experimental Framework to Examine the Influence of Promoter Architecture and Genomic Context on Gene Expression [PDF]

, 2020
Transcription is a fundamental process of gene expression. Information stored in DNA is transcribed into different types of mobile RNA, which play a role in various essential processes of the cell, e.g. translation.
Klein, Carlo Anton
core   +1 more source

Amsacrine Derivatives Selectively Inhibit Mycobacterial Topoisomerase I (TopA), Impair M. smegmatis Growth and Disturb Chromosome Replication

Frontiers in Microbiology, 2018
Amsacrine, which inhibits eukaryotic type II topoisomerase via DNA intercalation and stabilization of the cleavable topoisomerase-DNA complex, promotes DNA damage and eventually cell death.
Marcin J. Szafran, Marta Kołodziej, Patrycja Skut, Brahmam Medapi, Agnieszka Domagała, Damian Trojanowski, Jolanta Zakrzewska-Czerwińska, Jolanta Zakrzewska-Czerwińska, Dharmarajan Sriram, Dagmara Jakimowicz, Dagmara Jakimowicz   +10 more
doaj   +1 more source

Characterisation of size variants of type I DNA topoisomerase isolated from calf thymus [PDF]

European Journal of Biochemistry, 1984
Calf thymus DNA topoisomerase I, which belongs to the eukaryotic type I topoisomerases, is in a typical preparation purified as a set of five major polypeptides with Mr between 70000 and 100000. At least four of these proteins have binding affinity for DNA as was shown by incubating them with radioactive single‐stranded DNA after separation in ...
Schmitt, B., Schuh-Buhre, U., Vosberg, H.   +2 more
openaire   +3 more sources

Clerocidin selectively modifies the gyrase-DNA gate to induce irreversible and reversible DNA damage [PDF]

, 2008
Clerocidin (CL), a microbial diterpenoid, reacts with DNA via its epoxide group and stimulates DNA cleavage by type II DNA topoisomerases. The molecular basis of CL action is poorly understood.
Binaschi, Borgnetto, Brown, Cambau, Champoux, Corbett, Corbett, Ferrero, Fisher, Gatto, Higgins, Kawada, L. M. Fisher, M. Dias, M. Palumbo, Marians, Maxam, McCullough, Mizuuchi, Morrison, Pan, Pan, Pan, Pan, Pan, Peden, Pozzi, Richter, Richter, Richter, Shea, X. S. Pan, Yague, Yoshida, Zechiedrich   +34 more
core   +1 more source

The antimicrobial activity of exogeno us anionic phospholipids against Mycobacterium tuberculosis and Escherichia coli

Тонкие химические технологии, 2016
The effect of anionic phospholipids, namely, cardiolipin, phosphatidylglycerol and phosphatidic acid, on the growth of gram-negative bacteria E. coli BL21(DE3), as well as gram-positive bacteria M. tuberculosis H37Rv was investigated in this study.
Yu. L. Mikulovich, G. M. Sorokoumova, А. А. Selishcheva, V. I. Shvets   +3 more
doaj   +1 more source

Single-stranded DNA catenation mediated by human EVL and a type I topoisomerase [PDF]

Nucleic Acids Research, 2010
The human Ena/Vasp-like (EVL) protein is considered to be a bifunctional protein, involved in both actin remodeling and homologous recombination. In the present study, we found that human EVL forms heat-stable multimers of circular single-stranded DNA (ssDNA) molecules in the presence of a type I topoisomerase in vitro. An electron microscopic analysis
Takaku, Motoki, Takahashi, Daisuke, Machida, Shinichi, Ueno, Hiroyuki, Hosoya, Noriko, Ikawa, Shukuko, Miyagawa, Kiyoshi, Shibata, Takehiko, Kurumizaka, Hitoshi   +8 more
openaire   +2 more sources

Distribution bias and biochemical characterization of TOP1MT single nucleotide variants

Scientific Reports, 2017
Mitochondrial topoisomerase I (TOP1MT) is a type IB topoisomerase encoded in the nucleus of vertebrate cells. In contrast to the other five human topoisomerases, TOP1MT possesses two high frequency single nucleotide variants (SNVs), rs11544484 (V256I ...
Hongliang Zhang, Yeonee Seol, Keli Agama, Keir C. Neuman, Yves Pommier   +4 more
doaj   +1 more source

Antibacterial activity of a DNA topoisomerase I inhibitor versus fluoroquinolones in Streptococcus pneumoniae.

PLoS ONE, 2020
The DNA topoisomerase complement of Streptococcus pneumoniae is constituted by two type II enzymes (topoisomerase IV and gyrase), and a single type I enzyme (topoisomerase I).
Myriam V Valenzuela, Mirian Domenech, Patricia Mateos-Martínez, Fernando González-Camacho, Adela G de la Campa, Maria Teresa García   +5 more
doaj   +1 more source

Dammarenediol II enhances etoposide‐induced apoptosis by targeting O‐GlcNAc transferase and Akt/GSK3β/mTOR signaling in liver cancer

Molecular Oncology, EarlyView.
Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee, Byung‐Cheol Han, Gi‐Bang Koo, Jihye Park, Mijin Kwon, Young Bin Park, Jae‐Mun Choi, Seung‐Ho Lee, Sangho Roh   +8 more
wiley   +1 more source